: Make sure you have the right <tt>kernel-devel</tt> package installed; probably the <tt>kernel-PAE-devel</tt> package for the kernel you are running and will be running after the next reboot. Further kernel sources are not necessary.

Make sure you have the right kernel-devel package installed; probably the kernel-PAE-devel package for the kernel you are running and will be running after the next reboot. Further kernel sources are not necessary.